
We have used these feeders a number of times and they work great. To give you an idea we have a 20 gallon aquarium with 10 neon tetras and small bottom fish and we were usually gone for about 15 days and all the fish survived with no problems and that was only 14 days. Feed block so they work great and our fish didn't seem to "suffer" at all, they were all in perfect condition when we got home.

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